sql - Getting Parent of Parent in Self Join Table -

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i have self join table. table being used join 4 level, i.e.;

region -> country -> county -> town

how can parent of parent of town. 2 level query

select t.shortname town,        (select c.shortname locations c                 c.locationid = t.parentid) county locations t t.locationid = 100

now want country parent of county.

either hardcode join or use recursive cte.

;with locs ( select 1 level, shortname, parentid locations  locationid = 100 union select level + 1, l.shortname, l.parentid locations l  join locs on locs.parentid = l.locationid ) select * locs;

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